APA aipamena

Grubel, H. G. (1971). Effective tariff protection. Geneva: General Agreement on Tariff and Trade.

Chicago Style aipamena

Grubel, Herbert G. Effective Tariff Protection. Geneva: General Agreement on Tariff and Trade, 1971.

MLA aipamena

Grubel, Herbert G. Effective Tariff Protection. Geneva: General Agreement on Tariff and Trade, 1971.

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